Question

Question #1de64

Answer 1

The gold foil sheet is `1.07*10^-4 cm` thick.

Explanation:

To get this one first has to divide the mass of the gold sheet by the density of gold to get the volume:

`("Mass of Gold")/("Density") = "Volume"`

`Volume = (6.5*10^-3 g)/(19.32 g/(cm^3))`

`Volume = (6.5*10^-3 g)*(1/19.32) (cm^3)/g`

*This is because the division was changed to multiplication so that the `cm^3` is at the top and the grams cancel.

Therefore: `"Volume" = 3.35*10^-4cm^3`

`("Volume")/("Area") = "Thickness"`

Thus: Thickness = `(3.35*10^-4cm^3)/(3.12cm^2)`

Thickness = `1.07*10^-4cm`

Hope I helped :)